11120000001221 has 16 divisors (see below), whose sum is σ = 11750005203840. Its totient is φ = 10494488712960.

The previous prime is 11120000001203. The next prime is 11120000001233. The reversal of 11120000001221 is 12210000002111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11120000001221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11120000001821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20192696 + ... + 20736078.

It is an arithmetic number, because the mean of its divisors is an integer number (734375325240).

Almost surely, 2^{11120000001221} is an apocalyptic number.

It is an amenable number.

11120000001221 is a deficient number, since it is larger than the sum of its proper divisors (630005202619).

11120000001221 is a wasteful number, since it uses less digits than its factorization.

11120000001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547516.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11120000001221 its reverse (12210000002111), we get a palindrome (23330000003332).

The spelling of 11120000001221 in words is "eleven trillion, one hundred twenty billion, one thousand, two hundred twenty-one".